Home / 56,990,031.28-78,646,310.44-30,884,548.98

Finding the Fourth Proportional to 56,990,031.28, 78,646,310.44 and 30,884,548.98

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Solution

The fourth proportional to 56,990,031.28, 78,646,310.44 and 30,884,548.98 is: 42,620,714.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,990,031.28 : 78,646,310.44 = 30,884,548.98 : x
  2. Step 2: Convert to fraction form
    56,990,031.28/78,646,310.44 = 30,884,548.98/x
  3. Step 3: Cross multiply
    56,990,031.28x = 78,646,310.44 × 30,884,548.98
  4. Step 4: Simplify right side
    56,990,031.28x = 2,428,955,826,880,465.50
  5. Step 5: Solve for x
    x = 2,428,955,826,880,465.50/56,990,031.28
  6. Step 6: Final answer
    x = 42,620,714.05

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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.