Home / 92,721.80-139,085.53-31,931.42

Finding the Fourth Proportional to 92,721.80, 139,085.53 and 31,931.42

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Solution

The fourth proportional to 92,721.80, 139,085.53 and 31,931.42 is: 47,898.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,721.80 : 139,085.53 = 31,931.42 : x
  2. Step 2: Convert to fraction form
    92,721.80/139,085.53 = 31,931.42/x
  3. Step 3: Cross multiply
    92,721.80x = 139,085.53 × 31,931.42
  4. Step 4: Simplify right side
    92,721.80x = 4,441,197,878.71
  5. Step 5: Solve for x
    x = 4,441,197,878.71/92,721.80
  6. Step 6: Final answer
    x = 47,898.10

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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.