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Finding the Fourth Proportional to 91,296.95, 125,980.55 and 62,641.28

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Solution

The fourth proportional to 91,296.95, 125,980.55 and 62,641.28 is: 86,438.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,296.95 : 125,980.55 = 62,641.28 : x
  2. Step 2: Convert to fraction form
    91,296.95/125,980.55 = 62,641.28/x
  3. Step 3: Cross multiply
    91,296.95x = 125,980.55 × 62,641.28
  4. Step 4: Simplify right side
    91,296.95x = 7,891,582,433.80
  5. Step 5: Solve for x
    x = 7,891,582,433.80/91,296.95
  6. Step 6: Final answer
    x = 86,438.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.