Home / 81,430.06-112,378.08-45,631.60

Finding the Fourth Proportional to 81,430.06, 112,378.08 and 45,631.60

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Solution

The fourth proportional to 81,430.06, 112,378.08 and 45,631.60 is: 62,974.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,430.06 : 112,378.08 = 45,631.60 : x
  2. Step 2: Convert to fraction form
    81,430.06/112,378.08 = 45,631.60/x
  3. Step 3: Cross multiply
    81,430.06x = 112,378.08 × 45,631.60
  4. Step 4: Simplify right side
    81,430.06x = 5,127,991,595.33
  5. Step 5: Solve for x
    x = 5,127,991,595.33/81,430.06
  6. Step 6: Final answer
    x = 62,974.18

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1.5x scale

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.