Home / 77,280,003.40-115,920,005.10-58,006,409.80

Finding the Fourth Proportional to 77,280,003.40, 115,920,005.10 and 58,006,409.80

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Solution

The fourth proportional to 77,280,003.40, 115,920,005.10 and 58,006,409.80 is: 87,009,614.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,280,003.40 : 115,920,005.10 = 58,006,409.80 : x
  2. Step 2: Convert to fraction form
    77,280,003.40/115,920,005.10 = 58,006,409.80/x
  3. Step 3: Cross multiply
    77,280,003.40x = 115,920,005.10 × 58,006,409.80
  4. Step 4: Simplify right side
    77,280,003.40x = 6,724,103,319,848,689
  5. Step 5: Solve for x
    x = 6,724,103,319,848,689/77,280,003.40
  6. Step 6: Final answer
    x = 87,009,614.70

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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.