Home / 105,320.76-157,981.44-30,447

Finding the Fourth Proportional to 105,320.76, 157,981.44 and 30,447

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Solution

The fourth proportional to 105,320.76, 157,981.44 and 30,447 is: 45,670.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,320.76 : 157,981.44 = 30,447 : x
  2. Step 2: Convert to fraction form
    105,320.76/157,981.44 = 30,447/x
  3. Step 3: Cross multiply
    105,320.76x = 157,981.44 × 30,447
  4. Step 4: Simplify right side
    105,320.76x = 4,810,060,903.68
  5. Step 5: Solve for x
    x = 4,810,060,903.68/105,320.76
  6. Step 6: Final answer
    x = 45,670.59

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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.