Home / 57,111.20-85,666.80-30,802.40

Finding the Fourth Proportional to 57,111.20, 85,666.80 and 30,802.40

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Solution

The fourth proportional to 57,111.20, 85,666.80 and 30,802.40 is: 46,203.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,111.20 : 85,666.80 = 30,802.40 : x
  2. Step 2: Convert to fraction form
    57,111.20/85,666.80 = 30,802.40/x
  3. Step 3: Cross multiply
    57,111.20x = 85,666.80 × 30,802.40
  4. Step 4: Simplify right side
    57,111.20x = 2,638,743,040.32
  5. Step 5: Solve for x
    x = 2,638,743,040.32/57,111.20
  6. Step 6: Final answer
    x = 46,203.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.