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Finding the Fourth Proportional to 93,470.76, 128,985.15 and 53,180.76

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Solution

The fourth proportional to 93,470.76, 128,985.15 and 53,180.76 is: 73,386.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,470.76 : 128,985.15 = 53,180.76 : x
  2. Step 2: Convert to fraction form
    93,470.76/128,985.15 = 53,180.76/x
  3. Step 3: Cross multiply
    93,470.76x = 128,985.15 × 53,180.76
  4. Step 4: Simplify right side
    93,470.76x = 6,859,528,305.71
  5. Step 5: Solve for x
    x = 6,859,528,305.71/93,470.76
  6. Step 6: Final answer
    x = 73,386.89

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.