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Finding the Fourth Proportional to 93,322.80, 139,984.20 and 57,812.40

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Solution

The fourth proportional to 93,322.80, 139,984.20 and 57,812.40 is: 86,718.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,322.80 : 139,984.20 = 57,812.40 : x
  2. Step 2: Convert to fraction form
    93,322.80/139,984.20 = 57,812.40/x
  3. Step 3: Cross multiply
    93,322.80x = 139,984.20 × 57,812.40
  4. Step 4: Simplify right side
    93,322.80x = 8,092,822,564.08
  5. Step 5: Solve for x
    x = 8,092,822,564.08/93,322.80
  6. Step 6: Final answer
    x = 86,718.60

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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.