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Finding the Fourth Proportional to 72,483.14, 108,547.53 and 42,812.90

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Solution

The fourth proportional to 72,483.14, 108,547.53 and 42,812.90 is: 64,114.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,483.14 : 108,547.53 = 42,812.90 : x
  2. Step 2: Convert to fraction form
    72,483.14/108,547.53 = 42,812.90/x
  3. Step 3: Cross multiply
    72,483.14x = 108,547.53 × 42,812.90
  4. Step 4: Simplify right side
    72,483.14x = 4,647,234,547.14
  5. Step 5: Solve for x
    x = 4,647,234,547.14/72,483.14
  6. Step 6: Final answer
    x = 64,114.70

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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.