Home / 90,430.78-124,800.87-50,148.40

Finding the Fourth Proportional to 90,430.78, 124,800.87 and 50,148.40

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Solution

The fourth proportional to 90,430.78, 124,800.87 and 50,148.40 is: 69,208.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,430.78 : 124,800.87 = 50,148.40 : x
  2. Step 2: Convert to fraction form
    90,430.78/124,800.87 = 50,148.40/x
  3. Step 3: Cross multiply
    90,430.78x = 124,800.87 × 50,148.40
  4. Step 4: Simplify right side
    90,430.78x = 6,258,563,949.11
  5. Step 5: Solve for x
    x = 6,258,563,949.11/90,430.78
  6. Step 6: Final answer
    x = 69,208.34

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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.