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Finding the Fourth Proportional to 60,602.10, 90,903.15 and 38,513.40

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Solution

The fourth proportional to 60,602.10, 90,903.15 and 38,513.40 is: 57,770.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,602.10 : 90,903.15 = 38,513.40 : x
  2. Step 2: Convert to fraction form
    60,602.10/90,903.15 = 38,513.40/x
  3. Step 3: Cross multiply
    60,602.10x = 90,903.15 × 38,513.40
  4. Step 4: Simplify right side
    60,602.10x = 3,500,989,377.21
  5. Step 5: Solve for x
    x = 3,500,989,377.21/60,602.10
  6. Step 6: Final answer
    x = 57,770.10

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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.