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Finding the Fourth Proportional to 66,656.64, 99,397.05 and 66,056.57

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Solution

The fourth proportional to 66,656.64, 99,397.05 and 66,056.57 is: 98,502.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,656.64 : 99,397.05 = 66,056.57 : x
  2. Step 2: Convert to fraction form
    66,656.64/99,397.05 = 66,056.57/x
  3. Step 3: Cross multiply
    66,656.64x = 99,397.05 × 66,056.57
  4. Step 4: Simplify right side
    66,656.64x = 6,565,827,694.13
  5. Step 5: Solve for x
    x = 6,565,827,694.13/66,656.64
  6. Step 6: Final answer
    x = 98,502.23

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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.