Home / 87,313.40-130,883.70-42,903.80

Finding the Fourth Proportional to 87,313.40, 130,883.70 and 42,903.80

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Solution

The fourth proportional to 87,313.40, 130,883.70 and 42,903.80 is: 64,313.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,313.40 : 130,883.70 = 42,903.80 : x
  2. Step 2: Convert to fraction form
    87,313.40/130,883.70 = 42,903.80/x
  3. Step 3: Cross multiply
    87,313.40x = 130,883.70 × 42,903.80
  4. Step 4: Simplify right side
    87,313.40x = 5,615,408,088.06
  5. Step 5: Solve for x
    x = 5,615,408,088.06/87,313.40
  6. Step 6: Final answer
    x = 64,313.25

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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.