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Finding the Fourth Proportional to 60,999,871.60, 91,499,807.40 and 20,609,772.40

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Solution

The fourth proportional to 60,999,871.60, 91,499,807.40 and 20,609,772.40 is: 30,914,658.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,999,871.60 : 91,499,807.40 = 20,609,772.40 : x
  2. Step 2: Convert to fraction form
    60,999,871.60/91,499,807.40 = 20,609,772.40/x
  3. Step 3: Cross multiply
    60,999,871.60x = 91,499,807.40 × 20,609,772.40
  4. Step 4: Simplify right side
    60,999,871.60x = 1,885,790,205,157,835.75
  5. Step 5: Solve for x
    x = 1,885,790,205,157,835.75/60,999,871.60
  6. Step 6: Final answer
    x = 30,914,658.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.