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Finding the Fourth Proportional to 90,482.68, 135,702.15 and 37,931.50

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Solution

The fourth proportional to 90,482.68, 135,702.15 and 37,931.50 is: 56,888.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,482.68 : 135,702.15 = 37,931.50 : x
  2. Step 2: Convert to fraction form
    90,482.68/135,702.15 = 37,931.50/x
  3. Step 3: Cross multiply
    90,482.68x = 135,702.15 × 37,931.50
  4. Step 4: Simplify right side
    90,482.68x = 5,147,386,102.73
  5. Step 5: Solve for x
    x = 5,147,386,102.73/90,482.68
  6. Step 6: Final answer
    x = 56,888.08

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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.