Home / 30,688.02-45,776.45-30,180

Finding the Fourth Proportional to 30,688.02, 45,776.45 and 30,180

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Solution

The fourth proportional to 30,688.02, 45,776.45 and 30,180 is: 45,018.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,688.02 : 45,776.45 = 30,180 : x
  2. Step 2: Convert to fraction form
    30,688.02/45,776.45 = 30,180/x
  3. Step 3: Cross multiply
    30,688.02x = 45,776.45 × 30,180
  4. Step 4: Simplify right side
    30,688.02x = 1,381,533,336.45
  5. Step 5: Solve for x
    x = 1,381,533,336.45/30,688.02
  6. Step 6: Final answer
    x = 45,018.65

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.