Home / 91,710.12-137,565.80-29,380.64

Finding the Fourth Proportional to 91,710.12, 137,565.80 and 29,380.64

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Solution

The fourth proportional to 91,710.12, 137,565.80 and 29,380.64 is: 44,071.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,710.12 : 137,565.80 = 29,380.64 : x
  2. Step 2: Convert to fraction form
    91,710.12/137,565.80 = 29,380.64/x
  3. Step 3: Cross multiply
    91,710.12x = 137,565.80 × 29,380.64
  4. Step 4: Simplify right side
    91,710.12x = 4,041,771,246.11
  5. Step 5: Solve for x
    x = 4,041,771,246.11/91,710.12
  6. Step 6: Final answer
    x = 44,071.16

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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.