Home / 77,280,005.40-115,920,008.10-58,006,411.80

Finding the Fourth Proportional to 77,280,005.40, 115,920,008.10 and 58,006,411.80

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Solution

The fourth proportional to 77,280,005.40, 115,920,008.10 and 58,006,411.80 is: 87,009,617.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,280,005.40 : 115,920,008.10 = 58,006,411.80 : x
  2. Step 2: Convert to fraction form
    77,280,005.40/115,920,008.10 = 58,006,411.80/x
  3. Step 3: Cross multiply
    77,280,005.40x = 115,920,008.10 × 58,006,411.80
  4. Step 4: Simplify right side
    77,280,005.40x = 6,724,103,725,707,935
  5. Step 5: Solve for x
    x = 6,724,103,725,707,935/77,280,005.40
  6. Step 6: Final answer
    x = 87,009,617.70

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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.