Home / 78,718,970.28-108,634,876.74-45,676,724.52

Finding the Fourth Proportional to 78,718,970.28, 108,634,876.74 and 45,676,724.52

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Solution

The fourth proportional to 78,718,970.28, 108,634,876.74 and 45,676,724.52 is: 63,035,445.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,718,970.28 : 108,634,876.74 = 45,676,724.52 : x
  2. Step 2: Convert to fraction form
    78,718,970.28/108,634,876.74 = 45,676,724.52/x
  3. Step 3: Cross multiply
    78,718,970.28x = 108,634,876.74 × 45,676,724.52
  4. Step 4: Simplify right side
    78,718,970.28x = 4,962,085,338,117,136
  5. Step 5: Solve for x
    x = 4,962,085,338,117,136/78,718,970.28
  6. Step 6: Final answer
    x = 63,035,445.21

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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.