Home / 30,342,668.90-45,514,003.35-20,139,001.70

Finding the Fourth Proportional to 30,342,668.90, 45,514,003.35 and 20,139,001.70

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Solution

The fourth proportional to 30,342,668.90, 45,514,003.35 and 20,139,001.70 is: 30,208,502.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,342,668.90 : 45,514,003.35 = 20,139,001.70 : x
  2. Step 2: Convert to fraction form
    30,342,668.90/45,514,003.35 = 20,139,001.70/x
  3. Step 3: Cross multiply
    30,342,668.90x = 45,514,003.35 × 20,139,001.70
  4. Step 4: Simplify right side
    30,342,668.90x = 916,606,590,839,455.75
  5. Step 5: Solve for x
    x = 916,606,590,839,455.75/30,342,668.90
  6. Step 6: Final answer
    x = 30,208,502.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.