Home / 78,186,076.50-107,896,798.79-43,378,683.91

Finding the Fourth Proportional to 78,186,076.50, 107,896,798.79 and 43,378,683.91

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Solution

The fourth proportional to 78,186,076.50, 107,896,798.79 and 43,378,683.91 is: 59,862,591.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,186,076.50 : 107,896,798.79 = 43,378,683.91 : x
  2. Step 2: Convert to fraction form
    78,186,076.50/107,896,798.79 = 43,378,683.91/x
  3. Step 3: Cross multiply
    78,186,076.50x = 107,896,798.79 × 43,378,683.91
  4. Step 4: Simplify right side
    78,186,076.50x = 4,680,421,129,532,537
  5. Step 5: Solve for x
    x = 4,680,421,129,532,537/78,186,076.50
  6. Step 6: Final answer
    x = 59,862,591.13

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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.