Home / 30,651,148.90-42,308,835.21-18,265,127.53

Finding the Fourth Proportional to 30,651,148.90, 42,308,835.21 and 18,265,127.53

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Solution

The fourth proportional to 30,651,148.90, 42,308,835.21 and 18,265,127.53 is: 25,211,983.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,651,148.90 : 42,308,835.21 = 18,265,127.53 : x
  2. Step 2: Convert to fraction form
    30,651,148.90/42,308,835.21 = 18,265,127.53/x
  3. Step 3: Cross multiply
    30,651,148.90x = 42,308,835.21 × 18,265,127.53
  4. Step 4: Simplify right side
    30,651,148.90x = 772,776,270,756,404.38
  5. Step 5: Solve for x
    x = 772,776,270,756,404.38/30,651,148.90
  6. Step 6: Final answer
    x = 25,211,983.84

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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.