Home / 78,889,267.41-118,333,901.40-21,381,538.65

Finding the Fourth Proportional to 78,889,267.41, 118,333,901.40 and 21,381,538.65

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Solution

The fourth proportional to 78,889,267.41, 118,333,901.40 and 21,381,538.65 is: 32,072,308.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,889,267.41 : 118,333,901.40 = 21,381,538.65 : x
  2. Step 2: Convert to fraction form
    78,889,267.41/118,333,901.40 = 21,381,538.65/x
  3. Step 3: Cross multiply
    78,889,267.41x = 118,333,901.40 × 21,381,538.65
  4. Step 4: Simplify right side
    78,889,267.41x = 2,530,160,886,389,389
  5. Step 5: Solve for x
    x = 2,530,160,886,389,389/78,889,267.41
  6. Step 6: Final answer
    x = 32,072,308.05

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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.