Home / 65,390.01-90,244.63-38,541.21

Finding the Fourth Proportional to 65,390.01, 90,244.63 and 38,541.21

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Solution

The fourth proportional to 65,390.01, 90,244.63 and 38,541.21 is: 53,190.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,390.01 : 90,244.63 = 38,541.21 : x
  2. Step 2: Convert to fraction form
    65,390.01/90,244.63 = 38,541.21/x
  3. Step 3: Cross multiply
    65,390.01x = 90,244.63 × 38,541.21
  4. Step 4: Simplify right side
    65,390.01x = 3,478,136,688.63
  5. Step 5: Solve for x
    x = 3,478,136,688.63/65,390.01
  6. Step 6: Final answer
    x = 53,190.65

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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.