Home / 65,445.23-90,312.02-39,994.19

Finding the Fourth Proportional to 65,445.23, 90,312.02 and 39,994.19

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Solution

The fourth proportional to 65,445.23, 90,312.02 and 39,994.19 is: 55,190.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,445.23 : 90,312.02 = 39,994.19 : x
  2. Step 2: Convert to fraction form
    65,445.23/90,312.02 = 39,994.19/x
  3. Step 3: Cross multiply
    65,445.23x = 90,312.02 × 39,994.19
  4. Step 4: Simplify right side
    65,445.23x = 3,611,955,924.28
  5. Step 5: Solve for x
    x = 3,611,955,924.28/65,445.23
  6. Step 6: Final answer
    x = 55,190.51

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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.