Home / 91,984.91-137,925.41-31,985.78

Finding the Fourth Proportional to 91,984.91, 137,925.41 and 31,985.78

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Solution

The fourth proportional to 91,984.91, 137,925.41 and 31,985.78 is: 47,960.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,984.91 : 137,925.41 = 31,985.78 : x
  2. Step 2: Convert to fraction form
    91,984.91/137,925.41 = 31,985.78/x
  3. Step 3: Cross multiply
    91,984.91x = 137,925.41 × 31,985.78
  4. Step 4: Simplify right side
    91,984.91x = 4,411,650,971.11
  5. Step 5: Solve for x
    x = 4,411,650,971.11/91,984.91
  6. Step 6: Final answer
    x = 47,960.60

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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.