Home / 78,726,099.04-118,081,174.88-21,224,182.88

Finding the Fourth Proportional to 78,726,099.04, 118,081,174.88 and 21,224,182.88

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Solution

The fourth proportional to 78,726,099.04, 118,081,174.88 and 21,224,182.88 is: 31,834,124.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,726,099.04 : 118,081,174.88 = 21,224,182.88 : x
  2. Step 2: Convert to fraction form
    78,726,099.04/118,081,174.88 = 21,224,182.88/x
  3. Step 3: Cross multiply
    78,726,099.04x = 118,081,174.88 × 21,224,182.88
  4. Step 4: Simplify right side
    78,726,099.04x = 2,506,176,450,338,382
  5. Step 5: Solve for x
    x = 2,506,176,450,338,382/78,726,099.04
  6. Step 6: Final answer
    x = 31,834,124.65

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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.