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Finding the Fourth Proportional to 66,510.56, 99,242.56 and 64,255.52

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Solution

The fourth proportional to 66,510.56, 99,242.56 and 64,255.52 is: 95,877.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,510.56 : 99,242.56 = 64,255.52 : x
  2. Step 2: Convert to fraction form
    66,510.56/99,242.56 = 64,255.52/x
  3. Step 3: Cross multiply
    66,510.56x = 99,242.56 × 64,255.52
  4. Step 4: Simplify right side
    66,510.56x = 6,376,882,298.93
  5. Step 5: Solve for x
    x = 6,376,882,298.93/66,510.56
  6. Step 6: Final answer
    x = 95,877.74

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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.