Home / 85,610,208.86-128,431,309.83-38,927,123.78

Finding the Fourth Proportional to 85,610,208.86, 128,431,309.83 and 38,927,123.78

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Solution

The fourth proportional to 85,610,208.86, 128,431,309.83 and 38,927,123.78 is: 58,397,959.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,610,208.86 : 128,431,309.83 = 38,927,123.78 : x
  2. Step 2: Convert to fraction form
    85,610,208.86/128,431,309.83 = 38,927,123.78/x
  3. Step 3: Cross multiply
    85,610,208.86x = 128,431,309.83 × 38,927,123.78
  4. Step 4: Simplify right side
    85,610,208.86x = 4,999,461,494,191,807
  5. Step 5: Solve for x
    x = 4,999,461,494,191,807/85,610,208.86
  6. Step 6: Final answer
    x = 58,397,959.32

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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.