Home / 78,889,235.28-118,333,853.22-21,381,506.52

Finding the Fourth Proportional to 78,889,235.28, 118,333,853.22 and 21,381,506.52

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Solution

The fourth proportional to 78,889,235.28, 118,333,853.22 and 21,381,506.52 is: 32,072,259.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,889,235.28 : 118,333,853.22 = 21,381,506.52 : x
  2. Step 2: Convert to fraction form
    78,889,235.28/118,333,853.22 = 21,381,506.52/x
  3. Step 3: Cross multiply
    78,889,235.28x = 118,333,853.22 × 21,381,506.52
  4. Step 4: Simplify right side
    78,889,235.28x = 2,530,156,054,160,153
  5. Step 5: Solve for x
    x = 2,530,156,054,160,153/78,889,235.28
  6. Step 6: Final answer
    x = 32,072,259.86

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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.