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Finding the Fourth Proportional to 70,807.68, 105,530.40 and 67,852.80

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Solution

The fourth proportional to 70,807.68, 105,530.40 and 67,852.80 is: 101,126.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,807.68 : 105,530.40 = 67,852.80 : x
  2. Step 2: Convert to fraction form
    70,807.68/105,530.40 = 67,852.80/x
  3. Step 3: Cross multiply
    70,807.68x = 105,530.40 × 67,852.80
  4. Step 4: Simplify right side
    70,807.68x = 7,160,533,125.12
  5. Step 5: Solve for x
    x = 7,160,533,125.12/70,807.68
  6. Step 6: Final answer
    x = 101,126.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.