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Finding the Fourth Proportional to 79,688.80, 119,533.20 and 61,026.40

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Solution

The fourth proportional to 79,688.80, 119,533.20 and 61,026.40 is: 91,539.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,688.80 : 119,533.20 = 61,026.40 : x
  2. Step 2: Convert to fraction form
    79,688.80/119,533.20 = 61,026.40/x
  3. Step 3: Cross multiply
    79,688.80x = 119,533.20 × 61,026.40
  4. Step 4: Simplify right side
    79,688.80x = 7,294,680,876.48
  5. Step 5: Solve for x
    x = 7,294,680,876.48/79,688.80
  6. Step 6: Final answer
    x = 91,539.60

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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.