Home / 78,088.89-107,762.54-42,278.90

Finding the Fourth Proportional to 78,088.89, 107,762.54 and 42,278.90

Calculator

Solution

The fourth proportional to 78,088.89, 107,762.54 and 42,278.90 is: 58,344.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,088.89 : 107,762.54 = 42,278.90 : x
  2. Step 2: Convert to fraction form
    78,088.89/107,762.54 = 42,278.90/x
  3. Step 3: Cross multiply
    78,088.89x = 107,762.54 × 42,278.90
  4. Step 4: Simplify right side
    78,088.89x = 4,556,080,902.20
  5. Step 5: Solve for x
    x = 4,556,080,902.20/78,088.89
  6. Step 6: Final answer
    x = 58,344.80

Related Problems

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.