Home / 78,557,155.56-117,835,726.05-30,039,916.50

Finding the Fourth Proportional to 78,557,155.56, 117,835,726.05 and 30,039,916.50

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Solution

The fourth proportional to 78,557,155.56, 117,835,726.05 and 30,039,916.50 is: 45,059,871.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,557,155.56 : 117,835,726.05 = 30,039,916.50 : x
  2. Step 2: Convert to fraction form
    78,557,155.56/117,835,726.05 = 30,039,916.50/x
  3. Step 3: Cross multiply
    78,557,155.56x = 117,835,726.05 × 30,039,916.50
  4. Step 4: Simplify right side
    78,557,155.56x = 3,539,775,371,258,874.50
  5. Step 5: Solve for x
    x = 3,539,775,371,258,874.50/78,557,155.56
  6. Step 6: Final answer
    x = 45,059,871.96

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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.