Home / 77,380,437.80-115,971,123.90-47,056,111.40

Finding the Fourth Proportional to 77,380,437.80, 115,971,123.90 and 47,056,111.40

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Solution

The fourth proportional to 77,380,437.80, 115,971,123.90 and 47,056,111.40 is: 70,523,639.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,380,437.80 : 115,971,123.90 = 47,056,111.40 : x
  2. Step 2: Convert to fraction form
    77,380,437.80/115,971,123.90 = 47,056,111.40/x
  3. Step 3: Cross multiply
    77,380,437.80x = 115,971,123.90 × 47,056,111.40
  4. Step 4: Simplify right side
    77,380,437.80x = 5,457,150,125,421,603
  5. Step 5: Solve for x
    x = 5,457,150,125,421,603/77,380,437.80
  6. Step 6: Final answer
    x = 70,523,639.83

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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.