Home / 78,709,531.40-118,064,297.10-75,520,885.40

Finding the Fourth Proportional to 78,709,531.40, 118,064,297.10 and 75,520,885.40

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Solution

The fourth proportional to 78,709,531.40, 118,064,297.10 and 75,520,885.40 is: 113,281,328.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,709,531.40 : 118,064,297.10 = 75,520,885.40 : x
  2. Step 2: Convert to fraction form
    78,709,531.40/118,064,297.10 = 75,520,885.40/x
  3. Step 3: Cross multiply
    78,709,531.40x = 118,064,297.10 × 75,520,885.40
  4. Step 4: Simplify right side
    78,709,531.40x = 8,916,320,251,120,653
  5. Step 5: Solve for x
    x = 8,916,320,251,120,653/78,709,531.40
  6. Step 6: Final answer
    x = 113,281,328.10

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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.