Home / 81,668,411.85-112,710,350.57-61,005,985.77

Finding the Fourth Proportional to 81,668,411.85, 112,710,350.57 and 61,005,985.77

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Solution

The fourth proportional to 81,668,411.85, 112,710,350.57 and 61,005,985.77 is: 84,194,193.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,668,411.85 : 112,710,350.57 = 61,005,985.77 : x
  2. Step 2: Convert to fraction form
    81,668,411.85/112,710,350.57 = 61,005,985.77/x
  3. Step 3: Cross multiply
    81,668,411.85x = 112,710,350.57 × 61,005,985.77
  4. Step 4: Simplify right side
    81,668,411.85x = 6,876,006,042,700,102
  5. Step 5: Solve for x
    x = 6,876,006,042,700,102/81,668,411.85
  6. Step 6: Final answer
    x = 84,194,193.16

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.