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Finding the Fourth Proportional to 89,886,990.64, 124,008,751.53 and 52,203,739.52

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Solution

The fourth proportional to 89,886,990.64, 124,008,751.53 and 52,203,739.52 is: 72,020,661.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,886,990.64 : 124,008,751.53 = 52,203,739.52 : x
  2. Step 2: Convert to fraction form
    89,886,990.64/124,008,751.53 = 52,203,739.52/x
  3. Step 3: Cross multiply
    89,886,990.64x = 124,008,751.53 × 52,203,739.52
  4. Step 4: Simplify right side
    89,886,990.64x = 6,473,720,563,072,522
  5. Step 5: Solve for x
    x = 6,473,720,563,072,522/89,886,990.64
  6. Step 6: Final answer
    x = 72,020,661.91

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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.