Home / 48,506.16-72,743.76-18,916.80

Finding the Fourth Proportional to 48,506.16, 72,743.76 and 18,916.80

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Solution

The fourth proportional to 48,506.16, 72,743.76 and 18,916.80 is: 28,369.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,506.16 : 72,743.76 = 18,916.80 : x
  2. Step 2: Convert to fraction form
    48,506.16/72,743.76 = 18,916.80/x
  3. Step 3: Cross multiply
    48,506.16x = 72,743.76 × 18,916.80
  4. Step 4: Simplify right side
    48,506.16x = 1,376,079,159.17
  5. Step 5: Solve for x
    x = 1,376,079,159.17/48,506.16
  6. Step 6: Final answer
    x = 28,369.16

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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.