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Finding the Fourth Proportional to 93,277.80, 139,916.70 and 51,287.40

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Solution

The fourth proportional to 93,277.80, 139,916.70 and 51,287.40 is: 76,931.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,277.80 : 139,916.70 = 51,287.40 : x
  2. Step 2: Convert to fraction form
    93,277.80/139,916.70 = 51,287.40/x
  3. Step 3: Cross multiply
    93,277.80x = 139,916.70 × 51,287.40
  4. Step 4: Simplify right side
    93,277.80x = 7,175,963,759.58
  5. Step 5: Solve for x
    x = 7,175,963,759.58/93,277.80
  6. Step 6: Final answer
    x = 76,931.10

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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.