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Finding the Fourth Proportional to 66,462.40, 99,693.60 and 38,814.40

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Solution

The fourth proportional to 66,462.40, 99,693.60 and 38,814.40 is: 58,221.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,462.40 : 99,693.60 = 38,814.40 : x
  2. Step 2: Convert to fraction form
    66,462.40/99,693.60 = 38,814.40/x
  3. Step 3: Cross multiply
    66,462.40x = 99,693.60 × 38,814.40
  4. Step 4: Simplify right side
    66,462.40x = 3,869,547,267.84
  5. Step 5: Solve for x
    x = 3,869,547,267.84/66,462.40
  6. Step 6: Final answer
    x = 58,221.60

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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.