Home / 85,778,004.20-128,635,859.10-46,945,155.92

Finding the Fourth Proportional to 85,778,004.20, 128,635,859.10 and 46,945,155.92

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Solution

The fourth proportional to 85,778,004.20, 128,635,859.10 and 46,945,155.92 is: 70,400,687.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,778,004.20 : 128,635,859.10 = 46,945,155.92 : x
  2. Step 2: Convert to fraction form
    85,778,004.20/128,635,859.10 = 46,945,155.92/x
  3. Step 3: Cross multiply
    85,778,004.20x = 128,635,859.10 × 46,945,155.92
  4. Step 4: Simplify right side
    85,778,004.20x = 6,038,830,462,352,651
  5. Step 5: Solve for x
    x = 6,038,830,462,352,651/85,778,004.20
  6. Step 6: Final answer
    x = 70,400,687.43

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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.