Home / 91,442.12-137,069.01-51,915.74

Finding the Fourth Proportional to 91,442.12, 137,069.01 and 51,915.74

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Solution

The fourth proportional to 91,442.12, 137,069.01 and 51,915.74 is: 77,820.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,442.12 : 137,069.01 = 51,915.74 : x
  2. Step 2: Convert to fraction form
    91,442.12/137,069.01 = 51,915.74/x
  3. Step 3: Cross multiply
    91,442.12x = 137,069.01 × 51,915.74
  4. Step 4: Simplify right side
    91,442.12x = 7,116,038,399.87
  5. Step 5: Solve for x
    x = 7,116,038,399.87/91,442.12
  6. Step 6: Final answer
    x = 77,820.14

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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.