Home / 78,563,960.76-108,421,644.78-43,756,666.68

Finding the Fourth Proportional to 78,563,960.76, 108,421,644.78 and 43,756,666.68

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Solution

The fourth proportional to 78,563,960.76, 108,421,644.78 and 43,756,666.68 is: 60,386,081.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,563,960.76 : 108,421,644.78 = 43,756,666.68 : x
  2. Step 2: Convert to fraction form
    78,563,960.76/108,421,644.78 = 43,756,666.68/x
  3. Step 3: Cross multiply
    78,563,960.76x = 108,421,644.78 × 43,756,666.68
  4. Step 4: Simplify right side
    78,563,960.76x = 4,744,169,771,535,822
  5. Step 5: Solve for x
    x = 4,744,169,771,535,822/78,563,960.76
  6. Step 6: Final answer
    x = 60,386,081.93

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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.