Home / 75,155.04-103,783.68-56,259.36

Finding the Fourth Proportional to 75,155.04, 103,783.68 and 56,259.36

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Solution

The fourth proportional to 75,155.04, 103,783.68 and 56,259.36 is: 77,690.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,155.04 : 103,783.68 = 56,259.36 : x
  2. Step 2: Convert to fraction form
    75,155.04/103,783.68 = 56,259.36/x
  3. Step 3: Cross multiply
    75,155.04x = 103,783.68 × 56,259.36
  4. Step 4: Simplify right side
    75,155.04x = 5,838,803,415.24
  5. Step 5: Solve for x
    x = 5,838,803,415.24/75,155.04
  6. Step 6: Final answer
    x = 77,690.11

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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.