Home / 287,425,139.10-431,137,708.65-82,959,884.70

Finding the Fourth Proportional to 287,425,139.10, 431,137,708.65 and 82,959,884.70

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Solution

The fourth proportional to 287,425,139.10, 431,137,708.65 and 82,959,884.70 is: 124,439,827.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,425,139.10 : 431,137,708.65 = 82,959,884.70 : x
  2. Step 2: Convert to fraction form
    287,425,139.10/431,137,708.65 = 82,959,884.70/x
  3. Step 3: Cross multiply
    287,425,139.10x = 431,137,708.65 × 82,959,884.70
  4. Step 4: Simplify right side
    287,425,139.10x = 35,767,134,599,426,192
  5. Step 5: Solve for x
    x = 35,767,134,599,426,192/287,425,139.10
  6. Step 6: Final answer
    x = 124,439,827.05

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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.