Home / 85,778,005.20-128,635,860.60-46,945,156.92

Finding the Fourth Proportional to 85,778,005.20, 128,635,860.60 and 46,945,156.92

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Solution

The fourth proportional to 85,778,005.20, 128,635,860.60 and 46,945,156.92 is: 70,400,688.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,778,005.20 : 128,635,860.60 = 46,945,156.92 : x
  2. Step 2: Convert to fraction form
    85,778,005.20/128,635,860.60 = 46,945,156.92/x
  3. Step 3: Cross multiply
    85,778,005.20x = 128,635,860.60 × 46,945,156.92
  4. Step 4: Simplify right side
    85,778,005.20x = 6,038,830,661,406,245
  5. Step 5: Solve for x
    x = 6,038,830,661,406,245/85,778,005.20
  6. Step 6: Final answer
    x = 70,400,688.93

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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.