Home / 78,725,935.25-118,080,929.87-21,224,019.05

Finding the Fourth Proportional to 78,725,935.25, 118,080,929.87 and 21,224,019.05

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Solution

The fourth proportional to 78,725,935.25, 118,080,929.87 and 21,224,019.05 is: 31,833,879.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,725,935.25 : 118,080,929.87 = 21,224,019.05 : x
  2. Step 2: Convert to fraction form
    78,725,935.25/118,080,929.87 = 21,224,019.05/x
  3. Step 3: Cross multiply
    78,725,935.25x = 118,080,929.87 × 21,224,019.05
  4. Step 4: Simplify right side
    78,725,935.25x = 2,506,151,905,002,594
  5. Step 5: Solve for x
    x = 2,506,151,905,002,594/78,725,935.25
  6. Step 6: Final answer
    x = 31,833,879.10

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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.