Home / 77,890.47-107,488.88-42,080.41

Finding the Fourth Proportional to 77,890.47, 107,488.88 and 42,080.41

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Solution

The fourth proportional to 77,890.47, 107,488.88 and 42,080.41 is: 58,070.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,890.47 : 107,488.88 = 42,080.41 : x
  2. Step 2: Convert to fraction form
    77,890.47/107,488.88 = 42,080.41/x
  3. Step 3: Cross multiply
    77,890.47x = 107,488.88 × 42,080.41
  4. Step 4: Simplify right side
    77,890.47x = 4,523,176,140.84
  5. Step 5: Solve for x
    x = 4,523,176,140.84/77,890.47
  6. Step 6: Final answer
    x = 58,070.98

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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.