Home / 75,258.72-103,620.60-63,904.32

Finding the Fourth Proportional to 75,258.72, 103,620.60 and 63,904.32

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Solution

The fourth proportional to 75,258.72, 103,620.60 and 63,904.32 is: 87,987.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,258.72 : 103,620.60 = 63,904.32 : x
  2. Step 2: Convert to fraction form
    75,258.72/103,620.60 = 63,904.32/x
  3. Step 3: Cross multiply
    75,258.72x = 103,620.60 × 63,904.32
  4. Step 4: Simplify right side
    75,258.72x = 6,621,803,980.99
  5. Step 5: Solve for x
    x = 6,621,803,980.99/75,258.72
  6. Step 6: Final answer
    x = 87,987.20

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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.