Home / 91,521.34-137,286.90-28,385.08

Finding the Fourth Proportional to 91,521.34, 137,286.90 and 28,385.08

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Solution

The fourth proportional to 91,521.34, 137,286.90 and 28,385.08 is: 42,579.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,521.34 : 137,286.90 = 28,385.08 : x
  2. Step 2: Convert to fraction form
    91,521.34/137,286.90 = 28,385.08/x
  3. Step 3: Cross multiply
    91,521.34x = 137,286.90 × 28,385.08
  4. Step 4: Simplify right side
    91,521.34x = 3,896,900,068.47
  5. Step 5: Solve for x
    x = 3,896,900,068.47/91,521.34
  6. Step 6: Final answer
    x = 42,579.14

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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.