Home / 65,430.45-90,283.14-38,569.23

Finding the Fourth Proportional to 65,430.45, 90,283.14 and 38,569.23

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Solution

The fourth proportional to 65,430.45, 90,283.14 and 38,569.23 is: 53,219.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,430.45 : 90,283.14 = 38,569.23 : x
  2. Step 2: Convert to fraction form
    65,430.45/90,283.14 = 38,569.23/x
  3. Step 3: Cross multiply
    65,430.45x = 90,283.14 × 38,569.23
  4. Step 4: Simplify right side
    65,430.45x = 3,482,151,191.78
  5. Step 5: Solve for x
    x = 3,482,151,191.78/65,430.45
  6. Step 6: Final answer
    x = 53,219.12

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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.