Home / 90,775.08-125,271.36-53,071.20

Finding the Fourth Proportional to 90,775.08, 125,271.36 and 53,071.20

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Solution

The fourth proportional to 90,775.08, 125,271.36 and 53,071.20 is: 73,239.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,775.08 : 125,271.36 = 53,071.20 : x
  2. Step 2: Convert to fraction form
    90,775.08/125,271.36 = 53,071.20/x
  3. Step 3: Cross multiply
    90,775.08x = 125,271.36 × 53,071.20
  4. Step 4: Simplify right side
    90,775.08x = 6,648,301,400.83
  5. Step 5: Solve for x
    x = 6,648,301,400.83/90,775.08
  6. Step 6: Final answer
    x = 73,239.28

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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.