Home / 40,430.48-55,389.95-38,915.36

Finding the Fourth Proportional to 40,430.48, 55,389.95 and 38,915.36

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Solution

The fourth proportional to 40,430.48, 55,389.95 and 38,915.36 is: 53,314.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,430.48 : 55,389.95 = 38,915.36 : x
  2. Step 2: Convert to fraction form
    40,430.48/55,389.95 = 38,915.36/x
  3. Step 3: Cross multiply
    40,430.48x = 55,389.95 × 38,915.36
  4. Step 4: Simplify right side
    40,430.48x = 2,155,519,844.63
  5. Step 5: Solve for x
    x = 2,155,519,844.63/40,430.48
  6. Step 6: Final answer
    x = 53,314.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.