Home / 86,283,618.35-129,425,427.53-78,473,403.95

Finding the Fourth Proportional to 86,283,618.35, 129,425,427.53 and 78,473,403.95

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Solution

The fourth proportional to 86,283,618.35, 129,425,427.53 and 78,473,403.95 is: 117,710,105.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,283,618.35 : 129,425,427.53 = 78,473,403.95 : x
  2. Step 2: Convert to fraction form
    86,283,618.35/129,425,427.53 = 78,473,403.95/x
  3. Step 3: Cross multiply
    86,283,618.35x = 129,425,427.53 × 78,473,403.95
  4. Step 4: Simplify right side
    86,283,618.35x = 10,156,453,855,570,774
  5. Step 5: Solve for x
    x = 10,156,453,855,570,774/86,283,618.35
  6. Step 6: Final answer
    x = 117,710,105.93

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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.