Home / 90,788,500-125,141,771.04-61,409,118.40

Finding the Fourth Proportional to 90,788,500, 125,141,771.04 and 61,409,118.40

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Solution

The fourth proportional to 90,788,500, 125,141,771.04 and 61,409,118.40 is: 84,645,586.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,788,500 : 125,141,771.04 = 61,409,118.40 : x
  2. Step 2: Convert to fraction form
    90,788,500/125,141,771.04 = 61,409,118.40/x
  3. Step 3: Cross multiply
    90,788,500x = 125,141,771.04 × 61,409,118.40
  4. Step 4: Simplify right side
    90,788,500x = 7,684,845,834,581,051
  5. Step 5: Solve for x
    x = 7,684,845,834,581,051/90,788,500
  6. Step 6: Final answer
    x = 84,645,586.55

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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.