Home / 85,720,509.90-118,313,022.20-52,709,166.45

Finding the Fourth Proportional to 85,720,509.90, 118,313,022.20 and 52,709,166.45

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Solution

The fourth proportional to 85,720,509.90, 118,313,022.20 and 52,709,166.45 is: 72,750,159.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,720,509.90 : 118,313,022.20 = 52,709,166.45 : x
  2. Step 2: Convert to fraction form
    85,720,509.90/118,313,022.20 = 52,709,166.45/x
  3. Step 3: Cross multiply
    85,720,509.90x = 118,313,022.20 × 52,709,166.45
  4. Step 4: Simplify right side
    85,720,509.90x = 6,236,180,780,078,799
  5. Step 5: Solve for x
    x = 6,236,180,780,078,799/85,720,509.90
  6. Step 6: Final answer
    x = 72,750,159.65

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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.